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Nickel-based catalyst as well as preparation method and application thereof

A nickel-based catalyst and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve disasters, gas blockage and other problems, and achieve anti-carbon deposition Strong ability, low cost, good thermal stability

Inactive Publication Date: 2012-02-01
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As early as the eighties of last century (Catal.Rev.Sci.Eng., 24 (1982) 67), it was recognized that although the whisker-like carbon deposits generated by metal particle catalysis would not affect the conversion rate of reactants, they would Causes severe air blockage with potentially catastrophic consequences

Method used

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  • Nickel-based catalyst as well as preparation method and application thereof
  • Nickel-based catalyst as well as preparation method and application thereof
  • Nickel-based catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 1.17g of cerium nitrate and dissolve it in water to form an aqueous solution of cerium nitrate; dry 10.00g of γ-Al at room temperature 2 o 3 Immerse in the prepared cerium nitrate aqueous solution for 12 hours by equal volume impregnation method; dry at 120°C for 24 hours; bake at 450°C for 2 hours in air atmosphere to obtain the modified carrier.

[0030] Weigh 5.74g of nickel nitrate and dissolve it in water to form an aqueous solution of nickel nitrate; at room temperature, the prepared modified carrier is impregnated in the prepared aqueous solution of nickel nitrate for 12 hours by an equal volume impregnation method; dried at 120°C for 24 hours; Calcined at 500° C. for 5 hours in an atmosphere to obtain a catalyst precursor.

[0031] The prepared catalyst precursor was reduced in hydrogen at 900 °C for 1 hour.

[0032] figure 1 (a) is the XRD collection of collections of catalysts that the present embodiment makes, by figure 1 (a) It can be seen that the...

Embodiment 2

[0039] Weigh 2.45g of cerium nitrate and dissolve in water to form an aqueous solution of cerium nitrate; dry 10.00g of γ-Al at room temperature 2 o 3 Immerse in the prepared cerium nitrate aqueous solution for 12 hours by equal volume impregnation method; dry at 120°C for 24 hours; bake at 450°C for 2 hours in air atmosphere to obtain the modified carrier.

[0040] Weigh 6.02g of nickel nitrate and dissolve it in water to form an aqueous solution of nickel nitrate; at room temperature, impregnate the prepared modified carrier in the prepared aqueous solution of nickel nitrate by an equal volume impregnation method for 12 hours; dry at 120°C for 24 hours; Calcined at 500° C. for 5 hours in an atmosphere to obtain a catalyst precursor.

[0041] The prepared catalyst precursor was reduced in hydrogen at 900 °C for 1 hour.

[0042] figure 1 (b) is the XRD collection of illustrative plates of the prepared catalyst of the present embodiment, by figure 1 (b) It can be seen that ...

Embodiment 3

[0049] Weigh 3.85g of cerium nitrate and dissolve in water to form an aqueous solution of cerium nitrate; dry 10.00g of γ-Al at room temperature 2 o 3 Immerse in the prepared cerium nitrate aqueous solution for 12 hours by equal volume impregnation method; dry at 120°C for 24 hours; bake at 450°C for 2 hours in air atmosphere to obtain the modified carrier.

[0050] Weigh 6.31g of nickel nitrate and dissolve in water to form nickel nitrate aqueous solution; at room temperature, the prepared modified carrier is impregnated in the prepared nickel nitrate aqueous solution for 12 hours by equal volume impregnation; dry at 120°C for 24 hours; Calcined at 500° C. for 5 hours in an atmosphere to obtain a catalyst precursor.

[0051] The prepared catalyst precursor was reduced in hydrogen at 900 °C for 1 hour.

[0052] figure 1 (c) is the XRD collection of collections of catalysts that the present embodiment makes, by figure 1 (c) It can be seen that the prepared catalyst is compo...

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Abstract

The invention discloses a nickel-based catalyst as well as a preparation method and application thereof. The nickel-based catalyst has the following structural general formula: xNi.yCeAlO3.(100-x-y) Al2O3, wherein 1<=x<=20, 1<=y<=30. The catalyst is prepared by the following steps of: firstly, impregnating dried gamma-Al2O3 in a ceric salt solution at room temperature by using an incipient-wetness impregnation method, drying and roasting at the air atmosphere to obtain a modified carrier; then impregnating the modified carrier obtained at room temperature in a nickel salt solution by using the incipient-wetness impregnation method, drying and roasting at the air atmosphere to obtain a catalyst precursor; and finally, reducing the obtained catalyst precursor in hydrogen gas at 850-1050 DEGC. The catalyst provided by the invention has the advantages of strong coke resistance, good reaction stability and heat stability, high chemical and structural stability and the like and can be usedas the catalyst for preparing synthesis gas from methane.

Description

technical field [0001] The invention relates to a nickel-based catalyst and its preparation method and application, belonging to the technical field of catalysts. Background technique [0002] The rising price of oil in recent years has made countries around the world realize that energy and chemical industry raw materials cannot be based solely on oil, which has unstable supply and limited resources, and has prompted countries around the world to implement new energy strategies. Natural gas is favored for its cleanness, abundant reserves, wide distribution of reserves, and comprehensive economy superior to other fuels. It is considered to be an ideal fuel and raw material for the chemical industry in the future. The methane content in natural gas is generally around 95%. Methane cannot be liquefied at room temperature, which brings many difficulties to storage and transportation. Therefore, the activation and directional transformation of methane molecules have always bee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C01B3/40
CPCY02P20/52
Inventor 路勇陈炜盛雯倩何鸣元
Owner EAST CHINA NORMAL UNIV
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